The upcoming release, as outlined in RFC3, will introduce signal-based components with change detection strategy solely based on signals. Given the current zone-based change detection strategy, is there any advantage to using signals instead of the traditional method of setting values to class properties? Will a signal's dependency tree improve performance in zone-based components?
Today's answer is: it all depends.
Although the signals themselves have been implemented, they are still in a developer preview phase, so be prepared for potential changes to the APIs without migration support from the Angular team.
The purpose of this developer preview is to gather feedback in order to finalize the API.
Another important detail is that signals are currently linked to the "old" change detection mechanisms. Updating the value of a signal will internally trigger the same code as markForCheck. It's similar to how effect(() => {}) is connected to ApplicationRef.tick() + detectChanges().
As of now, there are no performance benefits to using signals. However, this may change in the future with the introduction of signal components.
If you're interested in learning how signals work, feel free to dive in and explore! But implementing them in an enterprise environment today may not be advisable.
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